View Single Post
  #29   Report Post  
Old March 5th 10, 06:44 PM posted to uk.sci.weather
John Hall John Hall is offline
external usenet poster
 
First recorded activity by Weather-Banter: Nov 2003
Posts: 6,314
Default Sparkling weather.

In article
,
Bonos Ego writes:
I once recall Philip Eden, correct me if I'm wrong, saying that a good
indicator of when Spring has arrived is when the average daily
temperature exceeds +6.0°c

snip

Yep. Presumably the soil temperature in the top inch or two will be
close to the average daily air temperature, and soil temperature is what
determines when many (most?) plants start growing.
--
John Hall
"Acting is merely the art of keeping a large group of people
from coughing."
Sir Ralph Richardson (1902-83)